All I do in my spare time is watch anime tbh. Watching anime is the only fun thing to do I guess. I am trying to tone down though because anime leads to a lot of my relapses. So what are some other things I can do?
Talk to people Hang out with friends / family Lift weights Do volunteer work Walk Bake someone a cake Write a letter to someone Build something Learn a skill Code something Do something for your parents Adopt a dog from the shelter Go outside Learn a new sport Write poetry Paint Make a blowgun and dart Grill out Go camping Train for a marathon/spartan race/cool run
Play vídeo games Get a dog/cat Play a Sport Go to the gym Make plans learn a New skill Go out And say hi to other people
If you have problems with anime-related erotica, you should avoid anime as well. Most of them have some sexual innuendo, fan service or sometimes are very explicit. Also, if a female character strikes you as hot, looking for pictures of her in sexual contexts becomes easy and is probably abundant.
It's probably better to go some place and unplug, from media. Clear your head or meet some people. Bookstore, beach, park or something.